End structure for tanks



Oct. 30, 1928. 4 I A. DAVIS. JR

' mm STRUCTURE FohT'uKs Filed Jan. 22. 1927 2 Sheets-Sheet 1 l/VI/ENTUR L ATTORNEY Patented Oct. 30, 1928. I

UNITED STATES AUGUSTINE DAVIS, JR., OF CINCINNATI, OHIO.

END STRUCTURE FOR TANKS.

Application filed January 22, 1927.

The invention relates to the end structure of a horizontal tank such as a truck tank having a welded-on box for carrying buckets or other necessary equipment, the tank and box forming a. unit.

In the prior practice over which the present invention is more particularly an improvement, the manner of joining the bucket-box to the tank proper has required setting the flanged end head with its head wall first into the rear end of the tank shell, the peripheral flange of the head extending re-arwardly, that is toward the end of the shell, and being welded to the shell on the inside. This has compelled the dish of the head wall to be inward of the tank. The object of the present invention is to enable the head to be disposed in the reverse manner, with its head wall outward, thereby securing greater strength, or equal strengthwith lighter gauge of metal, and at the same time to provide for advantageously connecting the box.

In the accompanying drawing forming part hereof:

Fig. 1 is a view partly in elevation and partly in vertical section of the rear end portion of such a tank embodying one of the forms of the invention;

Fig. 2 is a fragmentary section on a larger scale;

Fig. 3 is a View similar to Fig. 1 showing another form of the invention;

Fig. 4 is a fragmentary section on a larger scale corresponding to Fig. 3; and

Fig. 5 is a similar section illustrating a modification of the last form.

Referring to Figs. 1 and 2, the numeral 2 designates the shell of a horizontal tank of the kind used for tank trucks. These tanks commonly consist of a number of liquid-holding compartments, and consequently the shell 2 may be understood to represent either the shell of the rear compartment or the shell of a single chamber tank.

The rear end head 3 has its flange 4 inserted edge first part way into the rear end of the shell, so that the head protrudes, the bulged head wall 5 being disposed outwardly. The shell and head flange are united by a liquidretaining weld 6, more specifically a fusion weld joining the edge of the shell'to the outside of the flange the location of such a weld on the outside being an advantage.

An extensionband 7 is slipped part way over the projecting head and is welded to the flange 4 at 8, this weld also being on the out- Serial No. 162,704.

side. The forward edge of the band 7 is spaced from the rear edge of the shell, and the welds 6' and 8 are spaced from each other lengthwise of the tank. Furthermore both Welds are removed from the arched knuckle 20 of the head, which is important for strength. A finish band 9 is preferably provided to conceal thewelds 6 and 8.

The extension band? projects rearwardly from the head and forms an extension to which to weld the bucket-box 10.

In this construction, the rear wall. or sheet 11 ot'the bucket-box is cut out to form. a large opening in general conformity with the end of the tank proper, and numerous tongues 12 are bent backward from the edge of this openlng, projecting, in other words, toward the tank, these tongues underlapping the ex- .tension 7 and being welded thereto atl3. In

this respect a similarity will be perceived to Patent 1,579,688 of April 6, 1926, but the pres ent construction enables the head to be dis posed in the reverse manner to that shown in the patent, whereby important advantage is gained.

In Figs. 3 and 4, the construction is the same in regard to the shell 2, the head 3, and the weld 6. In this case, however, the back wall 11 of the box 10 is provided with a continuous flange 14 surrounding its opening and projecting toward the tank, and this flange is telescoped over the head 8 and welded to the flange 4 at 15. The welds 6 and 15 are shown covered by a finish band 16. The welds are preferably welds produced by the oxyacetythe flanges 14 and 4, and of requiring only two welds, both of which are outside welds and readily accessible. l/Vhile the welds are prefi erably oxyacetylene welds, electric weldin g is not excluded.

The construction of Fig. 5 dillers from that of Figs. 3 and. 4 in that the flange 14 of the box is telescoped over the shell 2, to which it i is welded at '15. While this construction may give some extra strength because of the three superposed thicknesses of metal, the construc tion of Figs. 3 and 4: has the important advantage of leaving the liquid-retaining weld 6 readily accessible. In Fig. 5 the head is set further into the shell than in the other construction.

For simplicity of illustration the bucketbox 10 withits parts 11 and 12 or 11 and 1a is shown as if made in one piece, but this is not significant, since in actual practice the box may, and usually will, be made of appropriate pieces Welded together in an integral con struction.

I claim:

1. A construction of the character described comprising a. tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, characterized by said head being disposed with its head Wall outward and its flange inward, the flange bebeing set into the tank shell and welded there to, and a connection between the box and the tank being telescoped over the end of the tank and welded thereto.

2. A construction of the character described comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, characterized by said head being disposed with its head wall outward and its flange inward, the flange being set into the tank shell and welded thereto, and a connection between the box and the tank being telescoped over the end of the tank and welded thereto, the welds uniting the head to the tank shell and the box connection to the tank being spaced apart lengthwise of the tank.

3. A construction of the character described, comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, char acterized by said head being disposed with its head wall outward and its flange set part .way into the tank shell and welded tl'iereto, and a connection between the box and the tank being telescoped over and welded to the portion of the head flange which projects out-- ward from the end of the tank shell.

4. A construction of the character described, comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, characterized by said head being disposed with its head wall outward and its flan set part way into the tank shell and welded thereto, and a connection between the box and the tank being telescoped over the portion of the head flange which projects outward from the end of the tank shell, said connection being welded to said flange at a region spaced from the weld between the head flange and the tank shell.

5. A construction oi the character described, comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end oi the tank, characterized by said head being disposed with its head wall outward and its flange set part way into the tank shell and welded thereto by a weld which joins the edge of the tank shell to the outside of said flange, and a connection between the box and the tank being telescoped over the portion of the head flange which projects from the shell, the edge of said connection being spaced from the edge of the tank shell and being welded to the outside of said flange.

6. A construction of the character described, comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, characterized by said head being disposed with its head wall outward and its flange set part way into the tank shell and welded thereto, and a connection between the box and the tank being telescoped over and welded to the portion of the head flange which projects outward from the end of the tank shell, both of the welds between the head flange and the tank shell and between the head flange and the box connection being removed from the knuckle of the head.

7. A construction of the character described, comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, characterized by said head being disposed with its head wall outward and its flange set part way into the tank shell and welded thereto and by said box having a flange forming part thereof, which flange is telescoped over the end of the tank and welded thereto.

8. A construction of the character described, comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, characterized by said head being disposed with its head wall outward and its flange set part way into the tank shell and welded thereto and by said box having a flange forming part thereof, which flange is telescoped over and welded to the portion of the head flange which projects outward from the end of the tank shell.

9. A construction of the character described, comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, characterized by said head being disposed with its head wall outward and its flange set part way into the tank shell and welded thereto and by said box having a flange forming partthereof, which flange is telescoped over and welded to the portion of the head flange which projects outward from the end of the tank shell, both of the welds between the head flange and the tank shell and between the head flange and box flange being removed from the kunckle of the head.

10. A construction of the character described, comprising a tank including a shell and an end head having a peripheral flange, and a box welded to the end of the tank, characterized by said head being disposed with its head Wall outward and its flange set part Way into the tank shell and Welded thereto by a weld which joins the edge of the tank shell to the outside of the head flange, and by said box having a flange forming part thereof, which flange is telescoped over the projecting portion of the head flange and spaced from 10 the end of the shell and welded to said head flange by a weld which oins the edge of the box flange to the outside of the head flange.

AUGUSTINE DAVIS, JR. 

